Package ch.k43.util

package ch.k43.util

Java Utility Package (Freeware)

A high-performance, user-friendly programming toolkit designed for Java back-end developers.

This package holds all classes used by the Java Utility Package. The full documentation with examples can be found on java-util.k43.ch

 JDBC Example
 try (KDB db = new KDB(KDB.JDBC_H2, "jdbc:h2:mem:mydb", "", "")) {

    KLog.abort(!db.isConnected(), "Error: {}", db.getErrorMessage());
                
    db.exec("CREATE TABLE addresses (sequence INT AUTO_INCREMENT, lastname VARCHAR(20), firstname VARCHAR(20))");
    db.prepare("INSERT INTO addresses (lastname, firstname) VALUES (?, ?)");
    db.execPrepare("Smith", "Joe");
    db.execPrepare("Miller", "Bob");
    db.execPrepare("Johnson", "Evelyn");
    db.exec("SELECT * FROM addresses");
    System.out.println(db.getDataAsJSON());
 }
 
 HTTPS Example
 KHTTPClient http = new KHTTPClient();
 
 if (!http.get("https://reqbin.com/echo/get/json")) {
    KLog.error("Error: {}", http.getLastError());
 } else {
    System.out.println(http.getResponseDataAsString());
 }
 
 SMTP Example
 KSMTPMailer mailer = new KSMTPMailer();

 mailer.setFrom("john.doe@acme.com");
 mailer.setTo("bob.smith@hotmail.com");
 mailer.setSubject("Subject");
 mailer.addText("Here is your requested file");
 mailer.addFile("test.txt");
 mailer.addText("Regards, John");
 mailer.send();
 

Author:

andy.brunner@k43.ch

Classes

Class	Description
K	Static class with many utility methods.
KDB	Class to support all JDBC compliant databases with basic database functions.
KFile	Static class with a collection of file utility methods.
KHelloWorld	Hello World example.
KHTTPClient	Support basic HTTP/HTTPS client transactions.
KLog	Static class for simple logging.
KLogCSVFormatter	Format logging output as single CSV line with UUID, time stamp, logging level, code location and the logging information.
KLogJDBCHandler	Java logging handler to output logging data to any compliant JDBC database.
KLogJSONFormatter	Format logging output as JSON formatted string with UUID, time stamp, logging level, code location and the logging information.
KLogLineFormatter	Format logging output as single formatted line with time stamp, logging level, code location and the logging information.
KLogSMTPHandler	Java logging handler to send logging data to an SMTP host.
KLogSMTPHandlerThread	This thread is started by the SMTP logging handler to send the SMTP mail.
KLogXMLFormatter	Format logging output as XML formatted string with UUID, time stamp, logging level, code location and the logging information.
KLogYAMLFormatter	Format logging output as YAML formatted string with UUID, time stamp, logging level, code location and the logging information.
KSMTPMailer	Compose and send MIME multipart email to an SMTP host.
KSocketClient	Supported TCP socket connections to non-TLS, TLS and TLS with client authentication.
KSocketServer	This class provides support for a TLS-secured or non-secured socket server.
KSocketServerThread	Class to handle user connections accepted by KSocketServerListener.
KSocketServerThreadSample	Simple upper case echo server to show a sample KSocketServerThread implementation.
KThread	This class adds some convenient methods for starting and stopping Java threads.
KTimer	Simple timer class.